Handling Variables

the output above should be:

Starting a new line

note that \n did not start the word double quotes on a new line, but it was displayed in the string with single quotes.
However, it did work that way in the source, look at the page source.

Inserting a tab

note that \t did not insert a tab with the words in double quotes, but it was displayed in the string with single quotes.
However, if you look at the page source, it did insert a tab.

Joining strings

Joining strings with a space